linux-kernel - [PATCH] thermal/core: Make cooling device state change private

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Date:   Mon, 11 Jan 2021 15:13:20 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     daniel.lezcano@...aro.org, rui.zhang@...el.com
Cc:     Kamil Debski <kamil@...as.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Amit Kucheria <amitk@...nel.org>,
        linux-hwmon@...r.kernel.org (open list:PWM FAN DRIVER),
        linux-kernel@...r.kernel.org (open list),
        linux-pm@...r.kernel.org (open list:THERMAL)
Subject: [PATCH] thermal/core: Make cooling device state change private

The change of the cooling device state should be used by the governor
or at least by the core code, not by the drivers themselves.

Remove the API usage and move the function declaration to the internal
headers.

Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 drivers/hwmon/pwm-fan.c        | 1 -
 drivers/thermal/thermal_core.h | 2 ++
 include/linux/thermal.h        | 3 ---
 3 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/hwmon/pwm-fan.c b/drivers/hwmon/pwm-fan.c
index bdba2143021a..0b1159ceac9b 100644
--- a/drivers/hwmon/pwm-fan.c
+++ b/drivers/hwmon/pwm-fan.c
@@ -378,7 +378,6 @@ static int pwm_fan_probe(struct platform_device *pdev)
 			return ret;
 		}
 		ctx->cdev = cdev;
-		thermal_cdev_update(cdev);
 	}
 
 	return 0;
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index 90f9a80c8b23..86b8cef7310e 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -65,6 +65,8 @@ static inline bool cdev_is_power_actor(struct thermal_cooling_device *cdev)
 		cdev->ops->power2state;
 }
 
+void thermal_cdev_update(struct thermal_cooling_device *);
+
 /**
  * struct thermal_trip - representation of a point in temperature domain
  * @np: pointer to struct device_node that this trip point was created from
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 1e686404951b..6ac7bb1d2b1f 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -390,7 +390,6 @@ int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp);
 int thermal_zone_get_slope(struct thermal_zone_device *tz);
 int thermal_zone_get_offset(struct thermal_zone_device *tz);
 
-void thermal_cdev_update(struct thermal_cooling_device *);
 void thermal_notify_framework(struct thermal_zone_device *, int);
 int thermal_zone_device_enable(struct thermal_zone_device *tz);
 int thermal_zone_device_disable(struct thermal_zone_device *tz);
@@ -437,8 +436,6 @@ static inline int thermal_zone_get_offset(
 		struct thermal_zone_device *tz)
 { return -ENODEV; }
 
-static inline void thermal_cdev_update(struct thermal_cooling_device *cdev)
-{ }
 static inline void thermal_notify_framework(struct thermal_zone_device *tz,
 	int trip)
 { }
-- 
2.17.1